Designing waterproof breathable materials based on electrospun nanofibers and assessing the performance characteristics |
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Authors: | Boram Yoon Seungsin Lee |
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Institution: | (1) Department of Textile Engineering, Isfahan University of Technology, 84156-83111 Isfahan, Iran;(2) Department of Chemical Engineering, Isfahan University of Technology, 84156-83111 Isfahan, Iran; |
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Abstract: | To develop waterproof breathable materials for diverse consumer applications, we used electrospinning to fabricate layered
fabric systems with varying composite structures. Specifically, we developed layered fabric structures based on electrospun
nanofiber webs with different levels of nanofiber web density, as well as different substrates and layer structures, and then
examined the breathability and waterproofness of the material. The breathability and waterproofness of the layered fabric
systems were compared with those of traditional waterproof breathable fabrics, including densely woven fabric, microporous
membrane laminated fabric, and hydrophilic nonporous polyurethane coated fabric. Different breathability and barrier performance
levels were achieved by varying the layer structure and substrates in the electrospun nanofiber web layered fabric systems.
The uniformity of the nanofiber web and lamination process also affected the barrier and comfort performances. The comparison
of waterproofness and breathability performances between the new materials and the traditional waterproof breathable materials
revealed that the layered structures based on electrospun nanofiber webs provide a higher level of resistance to water penetration
than densely woven fabrics and a higher degree of moisture vapor and air permeability than microporous membrane laminates
and coated fabrics, with a proper selection of layer structure, substrate fabric, and lamination process. |
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